"Data Formatters temporarily unavailable..." Error

Question

Possible Duplicate:
Program received signal: “0”. Data Formatters temporarily unavailable

I am taking above 200 OBShapedButtons on XiB and setting up the background images over there. After that I am taking the image of that particular OBShapedButton and coloring the image and setting it back again as the background of that OBShapedButton.

-(void)onTick:(NSTimer *)timer {
    //Database
    UIImage *setColor=[[UIImage alloc] init];
    for (int i=0; i<[dataArray count]; i++)
    { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
        currentLevelMaleValue =[[[dataArray objectAtIndex:i] objectForKey:@"CurrentLevelMaleColor"] doubleValue];
        printf("Current val is %f",currentLevelMaleValue);
        for (OBShapedButton *obshapedCountryButtons in scrollBaseView.subviews) 
        {
            if (obshapedCountryButtons.tag==i+1) 
            {
                UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapButton:)];
                tap.numberOfTouchesRequired=1;
                tap.numberOfTapsRequired=1;
                [obshapedCountryButtons addGestureRecognizer:tap];
                [obshapedCountryButtons addTarget:self action:@selector(buttonTagTrap:) forControlEvents:UIControlEventTouchDown];
                //[obshapedCountryButtons addTarget:self action:@selector(tapButton:) forControlEvents:UIControlStateHighlighted];
                setColor=[obshapedCountryButtons imageForState:UIControlStateNormal];
                countryCode =[self getCountryColorCurrentLevel:currentLevelMaleValue];
                setColor =[setColor imageTintedWithColor:countryCode];
                [obshapedCountryButtons setImage:setColor forState:UIControlStateNormal];[pool release];
                //    [setColor release];
                //    [obshapedCountryButtons release];
                //    [tap release]; 
                //         
            }

            //  }
        }
    }
}

Now,I am getting this error[After the loop has been executed around 40 times]-

Program received signal: “0”. Data Formatters temporarily unavailable, will re-try after a 'continue'. (Unknown error loading shared library "/Developer/usr/lib/libXcodeDebuggerSupport.dylib

Receiving this warning-

Received memory warning

Then the app is getting terminated.

Note :

No object allocations.

Please help me out with some of your ideas. How should I go ahead ?

Answer 1

UIImage *setColor=[[UIImage alloc] init];

is a memory leak as you are not release it. Actually the allocation is not necessary as you are assigning some other values to it. Similarly tap is also not released as you have commented that code.

A suggestion for this. Try to put this block of code in NSAutoreleasePool.

Edit:

-(void)onTick:(NSTimer *)timer {
    //Database
    UIImage *setColor;// =[[UIImage alloc] init];
    for (int i=0; i<[dataArray count]; i++)
    { 
        NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
        currentLevelMaleValue =[[[dataArray objectAtIndex:i] objectForKey:@"CurrentLevelMaleColor"] doubleValue];
        printf("Current val is %f",currentLevelMaleValue);
        for (OBShapedButton *obshapedCountryButtons in scrollBaseView.subviews) 
        {
            NSAutoreleasePool * pool1 = [[NSAutoreleasePool alloc] init];
            if (obshapedCountryButtons.tag==i+1) 
            {
                UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapButton:)];
                tap.numberOfTouchesRequired=1;
                tap.numberOfTapsRequired=1;
                [obshapedCountryButtons addGestureRecognizer:tap];
                [obshapedCountryButtons addTarget:self action:@selector(buttonTagTrap:) forControlEvents:UIControlEventTouchDown];
                //[obshapedCountryButtons addTarget:self action:@selector(tapButton:) forControlEvents:UIControlStateHighlighted];
                setColor=[obshapedCountryButtons imageForState:UIControlStateNormal];
                countryCode =[self getCountryColorCurrentLevel:currentLevelMaleValue];
                setColor =[setColor imageTintedWithColor:countryCode];
                [obshapedCountryButtons setImage:setColor forState:UIControlStateNormal];[pool release];
                //    [setColor release];
                //    [obshapedCountryButtons release];
                [tap release]; 

            }
            [pool1 drain];
        }
        [pool drain];
    }
}

Answer 2

profile your app with Instruments to check for memory leaks.

If no leaks, then you are trying to allocate too much memory since 200 buttons may be a lot. The only solution then is to load lazily: at any moment you should have only in memory the buttons that are visible by the user.

Answer 3

Memory warnings is a method of memory management apple implemented into iOS. If the device is running low on memory, it will send out a memory warning. It expects every running app to respond to this warning by clearing as much dirty memory as possible. It will do three rounds of memory warnings. The first two levels are basic messages to clear memory. If you don't respond to them in time, or don't clear enough memory by the 3rd level your app will be terminated as it's not playing well with the iOS.

Paste in return; at the end of if (obshapedCountryButtons.tag==i+1) block. Uncomment [setColor release]; [tap release]; code. Finding object with current tag is bad idea. Replace foreach loop with some finding block.

index = [scrollBaseView.subviews indexOfObjectPassingTest:^BOOL(id obj, NSUInteger idx, BOOL *stop) {

    }